Apex is seeking a Senior Thermal Engineer to own the thermal design and performance of our spacecraft from concept through flight. In this role, you’ll solve complex thermal challenges across the vehicle, develop and validate spacecraft level thermal models, and directly influence hardware design and mission performance. You’ll work hands-on with flight hardware and partner across engineering teams to take thermal systems from early design through integration, test, launch, and on orbit operations.

Lead payload thermal design, analysis, and integration from early concept and requirements definition through qualification, launch, and on-orbit operations.

Own the thermal technical interface with external customers, including requirements definition, interface development, design trades, technical reviews, and resolution of thermal-related issues.

Develop and maintain spacecraft- and payload-level thermal models using Ansys Thermal Desktop and perform analyses across applicable mission environments.

Develop and implement advanced passive thermal control solutions, including high-performance heat transport and heat rejection technologies.

Design and analyze active thermal-fluid systems, including component sizing, system-level performance analysis, and integration with spacecraft thermal architectures.

Drive thermal design decisions and collaborate with mechanical, systems, avionics, GNC, and other engineering disciplines to ensure vehicle and payload thermal requirements are met.

Plan and execute thermal subsystem milestones and technical reviews, including SRR, PDR, and CDR.

Support thermal hardware development, integration, build, and test, including component- and spacecraft-level thermal vacuum testing.

Correlate test and flight data to thermal models to improve model accuracy and validate thermal performance.

Senior Thermal Engineer

Responsibilities

Qualification

Required

Preferred

Benefits

Company

Apex Technology Inc

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